Camera attachment.



No.v 703,421. Patented July I, |902.

J. L. JACKSON.

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+rl @will UNITED STATES PATENT OFFICE.

JAMES LOGAN JACKSON, OF VILLIAMSPORT, PENNSYLVANIA.

CAM ERA ATTACH M ENT.

SPECIFICATION-forming part of Letters Patent No. 703,421, dated J' uly1, 1902.

Application filed October 25, 1901. Serial No. 79.952. (No model.)

To otZZ wto'm/A t may concern:

Be it known that I, JAMEs LOGAN JACK- sO N, a citizen of the UnitedStates, residing at Williamsport, in the county of Lycoming and State ofPennsylvania, have invented a new and useful Camera Attachment, of whichthe following is a specification.

This invention relates to photographic cameras, and has for its objectto provide for cutting 0E from the lens thereof reflected light fromadjacent objects and to permit the direct light-rays only striking thelens, thereby to obtain a clear-cut impression uponthe sensitive member.

It is furthermore designed to arrange for applying the present deviceeither directly to the lens-tube or to the front of the camera, as maybe convenient or necessary, and to facilitate the application andremoval thereof without interfering with any of the other parts of thecamera or requiring any adjustment or rearrangement thereof.

Another object is to have the device collapsible, so that it may befolded into compact form for convenience in carrying` the device whennot applied to the camera;

lVith these and other objects in view the pi'esentjinvention consists inthe combination and arrangement 0f parts, as will be hereinafter morefully described, shown in the accompanying drawings,and particularlypointed outin the appended claims, it being understood that changes inthe form, proportion, size, and minor details may be made within thescope of the claims without departing from the spirit or sacrificing anyof the advantages of the invention.

In the drawings, Figure l is a perspective View showing the deviceapplied to the front of a camera. Fig. 2 is a longitudinal sectionalview of the device. Fig. 3 is a transverse sectional view taken on theline 3 3 of Fig. 2. Fig. i is a perspective view of the collapsibleframe of the device. Fig. 5 is a detail perspective view of thefastening means employed-in the application of the device as illustratedin Fig. l. Fig. G is a detail View illustrating a modified form offastening means for the device.

Like characters of reference designate corresponding parts in all thefigures of the drawings.

ln photographic work, particularlyin making outdoor exposures, sensitiveplates or members are often ruined or at least materially impaired bytheaction of light reflected from adjacent objects which are not in therange of the lens, and to overcome this objection or difficulty I havedesigned to prevent reflected light from striking the lens by providinga flared tube l, formed of some dark material and having its smaller endconstructed for connection with the front or lens-tube of a camera, soas to embrace the lens, the camera-box being illustrated at 2 in Figs.l, 2, and 3 of the drawings. By this means the reflected light-rays fromadjacent objects are eifectually cut off and prevented from striking thelens and the direct lightrays only from the object to be photographedare capable of striking the lens, whereby a clear-cut impression is madeupon the sensitive member of the camera. lt will here be noted that theessential feature of the present invention is to provide a shield whichis open at opposite ends and embraces and projects forwardly from thelens so as to cutoff reflected light, the general shape of the shieldbeing conical or flared outwardly, the manner of attaching the shieldbeing of minor importance.

I prefer to have the shield collapsible, and therefore provide a frusto-helical frame 3, formed from a single length of wire and inclosedwithin a cover 4, of some dark textile fabric, whereby the device may becollapsed so as to lie entirely with-in the outer or larger end portionof the frame, whereby the shield may be conveniently carried in a pocketof the clothing or in a casing for carrying the camera-box.

For convenience in connecting the shield to a camera l have shown oneform of attachment in Figs. 2 and 3 of the drawings, Where-- in thesmaller end of the shield is provided with a metallic ring or collar 5,which is provided at diametrically opposite points withoutwardly-directed reversely-disposed hooks 6 for engagement with headedpins or projections 7, provided upon the front of the camera and atopposite sides of thelens-tube, whereby the shield may be convenientlyapplied to the camera and also readily removed therefrom withoutaffecting the lens or re- ICO quiring any adjustment or rearrangement ofparts of the camera.

In some cases-as, for instance, Where the lens-tube projects at asufficient distance in front of the camera-the smaller end of the frustohelical frame may be snapped or sprung upon the projected end of thelenstube, thereby requiring no additional fastenings for supporting theshield upon the camera.

Another form of attachment has been shown in Fig. 6, wherein the smallerend of the shield is provided with a split ring or clamp 8, havingitsopposite ends provided with outwardlydirected ears 9, Which are piercedby a setscreW lO, the clamp being` designed to embrace the projected endof a lens-tube and to be firmly held thereon by adjustment of theset-screw.

From the foregoing description it is apparent that the present inventionis essentially in the nature of an attachment to cameras and is notrestricted to any particular type of camera nor to outdoor Work alone,as it may be used for interior Work Whenever required, according to thejudgment of the operator.

Furthermore, it is not essentialthat the device be collapsible, nor isit essential that the shape thereof be conical, as illustrated in thedrawings, for it may be polygonal instead of circular in cross-section,although the frustoconical shape is preferred as being the mostsuccessful embodiment of lthe invention.

lVhat I claim isl. As a new article of manufacture, a collapsiblefrusto-helicalwire frame, and a -Ilexible cover carried by and embracingthe periphery of the frame, the opposite ends of the article being open.

2. A device for excluding reflected light from the lenses of cameras,comprising a tapered and collapsible tube formed of lightexcludingmaterial, the opposite ends of the device being open.

3. A device for excluding reiiected light from the lenses of cameras,comprising a tube formed by a collapsible frusto-helical frame, and aiexible light-excluding cover therefor, the opposite ends of the devicebeing open.

4. A device for excluding reflected light from the lenses of cameras,comprising a tube formed by a collapsible frusto-helical frame, aflexible light-excluding cover therefor, and attaching means carried bythe smaller end of the device, the opposite ends of the device beingopen.

5. As a new article of manufacture,a IieXible truste-helical wire frame,a flexible cover carried by and embracing the periphery of the frame,the opposite ends of the article be ing open, and means carried by thesmaller end ofthe article for mounting the same upon a support Withoutobstructing the open end thereof.

In testimony that I claim the foregoing as my oWn I have hereto affixedmy signature in the presence of two Witnesses.

JAMES LOGAN JACKSON.

Witnesses:

G. Huss, 0. P. llnniTi-IUT.

